Reinforcing and lifting method for building close to foundation pit: Fid-Bau Portal

Reinforcing and lifting method for building close to foundation pit

CUI TENGYUE

The invention relates to the technical field of building reinforcement and deviation rectification, and provides a reinforcing and lifting method for a building close to a foundation pit, which comprises the following steps of: arranging grouting hole point positions on a terrace on one side, close to the foundation pit, of an existing building; vertical drilling and grouting are conducted according to the grouting hole point positions, and a curtain wall arranged in the vertical direction is formed; reinforcing hole point positions and lifting hole point positions located above the reinforcing hole point positions are distributed on the pit wall, close to the existing building, of the foundation pit; horizontal drilling grouting is conducted according to the point positions of the reinforcing holes, and a deep grouting reinforcing body located below the existing building and used for supporting the existing building is formed; and horizontal drilling grouting is conducted according to the lifting hole point positions, and a shallow layer grouting lifting body located below the existing building and used for lifting the existing building is formed. According to the scheme, the structure of the building can be protected against damage when the existing building is lifted through grouting. And during lifting, grouting can accurately reach a grouting point, the building is accurately lifted, and the lifting effect is guaranteed.

本发明涉及建筑物加固纠偏技术领域，提供一种临近基坑建筑物的加固抬升方法，包括：在既有建筑物临近基坑的一侧的地坪上布设注浆孔点位；根据注浆孔点位进行竖直钻孔注浆，形成沿着竖直方向设置的帷幕墙；在基坑靠近既有建筑物的坑壁上布设加固孔点位以及位于加固孔点位上方的抬升孔点位；根据加固孔点位进行水平钻孔注浆，形成位于既有建筑物下方支撑既有建筑物的深层注浆加固体；根据抬升孔点位进行水平钻孔注浆，形成位于既有建筑物下方抬升既有建筑物的浅层注浆抬升体。根据本发明的方案，能够在注浆抬升既有建筑物时保护建筑物结构不受损坏。抬升时注浆能够精准到达注浆点，对建筑物进行精准抬升，保证抬升效果。

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